Mackie ThumpSub GO is a battery-powered portable subwoofer with a slim, ergonomic design that lets you pull off those iconic bass drops anywhere you GO. Two hot-swappable battery compartments for up to 12 hours of continuous bass thumping. (One GB-200 battery included for up to 6 hours. Optional second battery sold separately.) The portable subwoofer design means you can place ThumpSub GO horizontally or vertically, and you can carry the bass like a briefcase with the built-in ergonomic handle. Connect portable loudspeakers for a complete mono, stereo or zone PA system, reinforced with deep, floor-shaking bass. Stream wirelessly through the whole system with Bluetooth. ThumpSub GO is optimized for the Mackie Thump GO battery-powered loudspeaker or any portable loudspeaker with up to a 10' low-frequency driver.